Police in Oshkosh are investigating an armed robbery that occurred Thursday night in the 100 block of North Main Street. A 29 year-old woman was riding her bike on the sidewalk when she encountered a black male walking on the sidewalk. He displayed a gun and took her purse before running north on the street. She was not injured in the incident. The suspect was described as being in his mid 20’s, 5’8”-5’9” with shoulder length tightly curled dread locks and last seen wearing a red and orange striped polo shirt, blue jeans and a black hat. He had a droopy right lower eye lid. Anyone with information should contact police at (920) 236-5700.